1) cách pha chế 1000g dd nước muối sinh lí (dd NaCl 0,9%)
2) cách pha chế dd oresol

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?

The same side of the moon always faces earth because the

How does carbon monoxide pose the greatest threat to humans? a. it can be produced by wood fires. b. it can be produced by home furnaces. c. it is produced by acid rain. d. it is produced by modern automobiles.